got a couple of co lo servers with globalgold, around £50-60 per month iirc.
oneandone internet have some good dedicated offerings, although the datacentre is in germany, 123-reg are also pretty reasonable.
if you really want to keep the costs down you could always consider a vps account, basically you get a vmware type setup to do as you wish, from around £20 a month.
of course it all depends what your planning on using it for?